Year	annual % growth
1971	1.3795565276943762
1972	4.3866158545973235
1973	4.574915819272832
1974	-4.665574061441248
1975	-1.1427209018008
1976	4.044717357093191
1977	2.812348302658066
1978	3.83865372597036
1979	-1.5829979568328412
1980	-2.9066950931077002
1981	3.15428546254779
1982	-0.1427496659513423
1983	2.2685011793257956
1984	6.951412064087975
1985	3.2945955269578064
1986	2.430245592991696
1987	2.779165134698914
1988	4.698095688093275
1989	1.2831037306655588
1990	-0.023125165131901326
1991	-1.1557149264704236
1992	1.7843025683279592
1993	0.9766080818538683
1994	3.1978026158168404
1995	2.1935017369997922
1996	2.9386943097467366
1997	4.09540199380551
1998	4.444320577308389
1999	3.136694677408073
2000	2.899565710977825
2001	0.4824555065677174
2002	0.6287725624603837
2003	1.1362530445898358
2004	3.0164813188260524
2005	1.88432115804558
2006	2.8398764683591935
2007	-0.4289182766865167
2008	-3.3026826135912017
2009	-2.3736890683427276
2010	3.518047851964326
2011	1.478918474914039
2012	2.8618516739416435
2013	0.7732360488069929
2014	2.4758524840476923
2015	2.3235475800889276
2016	0.2566438818872854
2017	2.179339444869612
2018	2.231362878524237
2019	1.6650513416918642
2020	-4.667546174920545
2021	5.281076720522535